Oil-burning-furnace front



J. REID.

OIL BURNING FURNACE FRONT.

APPLICATION mm APR. 9. 192a.

Patented Apr. 25, 1922.

2 SHtETS SHEET 1.

k x x FIG. 4

J.-RE|D.

OIL BURNING FURNACE FRONT.

APPLICATION FILED AFR.9,1920.

' Patented Apr. 25, 1922.

2 SHEETS-SHEET 2.

ATTORNEY UNITED" STATES PATENT, OFFICE.-

Jorriv REID, or NEW YORK, N. Y.-

OIL-BURNING-FUBNACE FRONT.

" Application filed April 9,

To all whom it may concern:

Be it known that I, JoHN REID, a subject of the King of (treat Britain, and residing at Church 'St., in the city of New York, in theStateof New York, in the United States of America, have invented a new and useful Oil-Burning-Furnace Front, of which the following is the specification.

The invention relates to oil burning furnace fronts as described in the present specification and illustrated in the accompanying drawings thatform part of the same.

The invention consist essentially in the 7 novel means employed in directing theair repaired and reassembled; to insure ready access to the interior'of the furnace; and generally to provide a durable and serviceable furnace front that may under certain circumstances be so rearranged as tobe temporarily or even permanently fitted up for a coal burning furnace without removing the main parts from the-furnace mouth. a

In the drawings,-Figure 1 is a front elevation of the back plate with the intermediate walls in section as arranged in'one form of my invention.

Figure 2 is a vertical-sectional view of the form of invention illustrated in Figure 1.

Figure 3 is a front elevation of a back plate showing another arrangement of intermediate walls in section.

Figure 4 is a vertical sectional viewof the form of'invention illustrated in Figure 3.

Figure 5 is an elevation of the front plate applicable to either of the aforesaid forms of the invention.

Figure 6 is a sectional view of a modified arrangement of the parts.

Figure 7 is a perspective detail of the closure for natural draft doors.

Figure 8 is aperspective detail of a form of catch for the natural draft door. 1

In this invention the purpose is largely to combine natural draft and forced draft I Specification of Letters Patent. Patented Apr. 25, 1922.

1920. Serial No. 372,714.

effects in the one furnace front, though primarily the natural-draft effects have the most prominence in the, specification and drawings belonging to this application. However it is of first importance to start a fire with the milde-fl'ect s of a natural draft and a5 the heat increases and'become's extreme then the benefit of'the forced draft is very material to the efiicient steaming properties of the furnace and this invention has 'to do with the arrangements of doors and'plates whereby the direction of the air is so guided asto-reachthe furnace and more particuthe burner fnouth.

: Referring to the drawings, the back plate larlv the flame beyond the area surrounding- 1 .is formed with the converging wall 2 surrounding the flame opening 3 which forms'a cone shaped recess from the firebox side.

The end of the cone recess wall 2 being oifset vertically. and securedi-in the thickened ring 4 preferably in grid-form and filled with refractory material and corresponding 'to a Venturi tube. The lining plates 5 and 6 also terminate in the ring 4 and form air chambers both for cooling the lining and for supplying superheated air to the flame I through the port 7, the air reaching the lining air chambers through the ports 8 in the back plate 1.

The air shield wall 9' in Figure 1 is shown at the to with the central port 10 closed by the va ve 11, while the flare wall 12 at the I lower portion of the front reaches up part way towards meeting the shield wall 9.

The front plate 13 is secured to the shield wall 9 and flare wall-12 an is formed with the upper draft door 14 and lower draft wards the back plate 1 from below the openi ingclosed by the upper draft door 14 and terminates about midway between front and ,back plates.

The air cover 17 extends from. the opening 18 in the. front plate to the back plate immediately above the cone recess wall 2 and under the ledge 19 and is formed with the air port 20 situated under the baffle plate 16 thereby imparting a twist to the flow of air, which has the effect of avoiding pockets of dead air often occurring in furnace draft arrangements.

The cover plate 21 closes in the front opening 18 of the front plate 13 and is formed with the hinge draft door 22 in its upper portion, the lower portion, carrying the. oil

2 from the back plate.

pipe sleeve 23 which supports the oil'pipe and the burner 24 at its inner end, the said burner 24 being well retired between the front plate in view of the cone recess wall .The opening 18 in the-front plate is slightly higher than the flame opening3 in the back plate bringing the-lower part of the opening '18 opposite the flame opening 3, therefore a splendid draft effect can be obtained through the draft door-in the clo- I is. open at the end ,thereof adjacent to the closure platesothat the air can flow inside 7 said shell towards the flame from the burner 24, the burner mouth being protected by the bell mouth deflector 28 mounted on the oil pipe sleeve'23.

'. For, natural draft effects, in this particular form of the invention, sosoon as the fire gets a reasonable start and requires building up, the draft doors are gradually opened, un-

til it is able to stand all theair that will naturally rush in to fill up the vacuum created. This airthrough the upper draft door comes first in contact with the baffle plate and then flows through the port therebelow.

The air through the draft door in the closure plate flows between the outer cylinder 27 and the deflector shell 25 and through the deflector shellitself and is then deflected by the bell mouth deflector 28 and the. ring z 4, finally reaching the flame well clear of the burner mouth.

Once the flame is well built up, that. is to say, has reached the proper stage, of combus- -tion,then it ispossible to turn'on the forced draft. through thevalve and the great force of air in its flow finds its way partly through the port 10 and p'artlyibeyond the ends of the shield wall 9, and if the natural draft doors are all closed, it flows steadily around, until it reaches-all sides of the air register formed by the deflector shell 25 the vanes 26 and the outer cylinder 27.

In Figures and 4 the intermediate wall is shown as similar to many types of the air register to the top of the front and is Reid furnaces, in which the shield wall 29 is-int'ermediate of'thedistance from 4 the formed with the central port 30, closed by the valve 31, and i the sloping sections 32 mergingmto the vertlcal sections 33 termi mating in the inturned ends 34. The valves respectively to the front plate 39 and back plate 40, the former having a' central opening flanged by the/ outwardly projecting ring 41, and the latter having the flame opening 42 surrouded by the inwardly projecting annular wall 43.

The spider 44 is secured by the bolts 45 to the ring 41 and the cone deflector 46 is secured to the spider 44, while the oil pipe sleeve 47. is supported in the hub of the spider 44 and supports at the end of the oil pipe therein the burner 48. f

The burner-48 's considerably retired towards the front/plate from the flame open ing and iswithin the end of thecone deflector 46, but the bell mouth deflector 49 is ad -justably secured on the sleeve 47 and protects theburner' mouth.

tor cone 51 with it,.so that when the closure plate 50 is moved along on the sleeve to allow natural draft thereto, the air is deflected by the cone 51 into and. through the shell of-the cone deflector 46, part of the flow of course going through the vanes of the said conedeflector 46 on the outer side of theshell. g

It will be readily seen that for forced draft effects this form of the invention is equally efficient with the other types of the. Reid furnace fronts but the natural draft effects are prominently identified with this type and as explained in the foregoing, these are extremely useful particularly in building up the flame.

In Figures 5, 6, 7 and 8, a front is shown, which is particularl suitable for the natural draft effects and this front the annular wall 52 from the back plate 53 and surrounding the flame opening 54 extends quite a long distance. towards the front plate, so far indeed as to partially enclose the cone deflector 55 extending from the front plate;

The burner 56 is supported in the oil pipe sleeve 57 and the latter carries the-inner bell mouth deflector 58.

The oil pipe sleeve 57 is supported by the bar 59, which is suitably bossed at 60'around the sleeve holei I The bar 59 is formed with the hinge lugs 1 61 and 62, in which the straps 63 extend upwardly therefrom and the hinge straps .64 extend downwardly therefrom, each. set' of straps being independently pivoted. in the saidlugs. The flap 65 is secured to the top-hinge straps and the larger flap 66 is secured to the hinge straps 64.

The front plate 67 is formed with a large opening which is here shown as rectangular, though it may be any shape and this opening is recessed therearound at 68 to forma seat forthe flaps 65 and 66.

The bar 59 is secured to the inner side of the front plate 67, so that the burner 56 may be centrally arranged in the cone deflector 55 and this bar 59 extends across the opening in the said front plate and the flaps t5 and 66 open outwardly and in closing fit lnto the seat 68. Any suitable form of opena ing and closing device, may-be used for. this purpose, a ratchet 691s illustrated engaged by the dog 70., t

The lower draft door 71 is shown as attached to the front plate 67 and closes a corre'sponding opening near the bottom of the.

I said front'plate just above the flare wall 72.

The shield wall 7 3 is shown at the top, and side valves are arranged between said flare wall and saidshield wall and in the central port of the said shield wall.

These features are common to several of the Reid fronts and have been fully desecribed in this specification. a The burner is retired towards the front plate from the flame opening in the same manner as already described.

- What I claim is z-- In the operation of this form of the front ,for natural draft, the flap doors are opened and as the lower door is much larger than the upper door a greater volume of air will flow in from below, which is correct, and to -1ncrease this volume of air the lower draft door in the front mayialso be opened.

Just as soon asthe flam /reaches that point of combustion, which may be considered as.

extreme heat, the forceddraft may then be resorted to and the fire continued as herein before explained.

Many changes may be made in regard to ing a burner, said back plate having an'ann'ular wall encircling the 'flame opening and projecting. towards the front plate, and

said airdirector extending from said front plate within said annular wall.

1 2. A.-furnace front comprising a front and a back plate with intermediate walls forming an air pocket-and an air director in the central area of said pocket and surrounding a burner, said back plate having an annular 'wall projecting towards the front plate and surrounding the flame opening, and said air director having a plurality of curved vanes mounted on a converging casing extending from the front plate to within said annular wall.

'3. A furnace front comprisin surrounding said opening, a closure for said openlng ,havln a central cone 'deflectmg member secure thereto, an 011 pipe sleeve extending through said closure and through said cone deflector, a-burner at .the end of said sleeve, a bell mouthed deflector mounted on said sleeve around said burner, a cone deflector having vanes projecting therefrom and extending'inwardly andencir cling said burner, a back plate having a flame opening and intermediate walls between said front and back plates forming therewith an airpocket.

a front plate having an intermediate opening there- .through, and an outward extending flange 4. A furnace front comprising a front I plate having an intermediate opemng therethrough, and a flange extending outwardly from said opening, a closure for said-opening having a deflecting member secured to the inside for natural draft effects, a spiderrigidly secured to said flange, an oil pipe sleeve secured in said'spider, a burner at the inner end of said sleeve, a cone deflector having vanes projecting therefrom and surrounding said burner-,a back plate havin a flame. opening and an inwardly projecting annular wall surrounding said flame opening and intermediate walls forming with said front plate and said back plate. an air pocket;

5. A furnace front comprisin plate, back plate and intermediate walls for an air pocket having an opening thereinto through the front plate and therefrom through the back plate, an air director between said front and backplates, a burner, a closure frame secured around the front a front opening, a cross bar secured to said frame above the vertical centre thereof and having a central-boss for supporting the burner tube, an up' er door hinged to said bar, a lower door'hlnged tojsaid bar and of greater depth' than said upper door and means for holding said doors close or open.

Signed'at the city of New York, in the State of New York, in the United States of America, this 2nd day of April, 1920.

. JOHN REID. 

